org.openjdk.jmc.jdp.common

Class JDPPacket

java.lang.Object

org.openjdk.jmc.jdp.common.JDPPacket

All Implemented Interfaces:

Discoverable

public final class JDPPacket
extends java.lang.Object
implements Discoverable

Class for delivering and retrieving the content.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<java.lang.String,java.lang.String>	decoded
private byte[]	encoded
(package private) static java.lang.String	KEY_DISCOVERABLE_ID
private static byte[]	MAGIC
private static int	PROTOCOL_VERSION
private java.lang.String	sessionId

Constructor Summary

Constructors

Constructor and Description
JDPPacket(byte[] data)
JDPPacket(java.util.Map<java.lang.String,java.lang.String> discoveryData)

Method Summary

Modifier and Type	Method and Description
private static boolean	checkMagic(byte[] data) Checks if the first bytes in the byte buffer are the JDP magic bytes.
private static void	checkVersion(int version) Checks if this version bytes in the byte buffer are of a version that this class can decode.
private static java.util.Map<java.lang.String,java.lang.String>	decode(byte[] data)
private static java.util.Map<java.lang.String,java.lang.String>	decodeHotSpot(byte[] data)
private static java.lang.String	decodeString(java.io.DataInputStream dis) Reads a string from the byte buffer.
private static byte[]	encode(java.util.Map<java.lang.String,java.lang.String> discoveryData)
boolean	equals(java.lang.Object obj)
byte[]	getDiscoveryDataAsByteArray()
java.util.Map<java.lang.String,java.lang.String>	getPayload()
java.lang.String	getSessionId()
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

KEY_DISCOVERABLE_ID

static final java.lang.String KEY_DISCOVERABLE_ID

See Also:

Constant Field Values

PROTOCOL_VERSION

private static final int PROTOCOL_VERSION

See Also:

Constant Field Values

MAGIC

private static final byte[] MAGIC

decoded

private final java.util.Map<java.lang.String,java.lang.String> decoded

encoded

private final byte[] encoded

sessionId

private final java.lang.String sessionId

Constructor Detail

JDPPacket

public JDPPacket(java.util.Map<java.lang.String,java.lang.String> discoveryData)

JDPPacket

public JDPPacket(byte[] data)
          throws CodingException

Throws:

CodingException

Method Detail

getPayload

public java.util.Map<java.lang.String,java.lang.String> getPayload()

Specified by:

getPayload in interface Discoverable

Returns:

the discovery payload.

getSessionId

public java.lang.String getSessionId()

Specified by:

getSessionId in interface Discoverable

Returns:

the identifier uniquely identifying the discoverable session. A new session UUID is generated whenever the JDP server is started.

getDiscoveryDataAsByteArray

public byte[] getDiscoveryDataAsByteArray()

encode

private static byte[] encode(java.util.Map<java.lang.String,java.lang.String> discoveryData)
                      throws CodingException

Throws:

CodingException

decode

private static java.util.Map<java.lang.String,java.lang.String> decode(byte[] data)
                                                                throws CodingException

Throws:

CodingException

decodeHotSpot

private static java.util.Map<java.lang.String,java.lang.String> decodeHotSpot(byte[] data)
                                                                       throws java.io.IOException

Throws:

java.io.IOException

decodeString

private static java.lang.String decodeString(java.io.DataInputStream dis)
                                      throws java.io.IOException

Reads a string from the byte buffer.

Parameters:

data - the byte buffer to read from.

size - the size to read.

offset - the position to read from.

Returns:

the resulting String.

Throws:

java.io.IOException

checkMagic

private static boolean checkMagic(byte[] data)

Checks if the first bytes in the byte buffer are the JDP magic bytes.

Parameters:

data - the byte buffer to check.

Returns:

true if the first bytes match, false otherwise.

checkVersion

private static void checkVersion(int version)
                          throws CodingException

Checks if this version bytes in the byte buffer are of a version that this class can decode.

Throws:

CodingException

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object